DeepSeek V4 Pro 0813 model now available via OpenRouter API
The latest DeepSeek V4 Pro variant is accessible only through an API endpoint on OpenRouter, with no official announcement page from DeepSeek. Open-weight releases for prior V4 Pro and V4 Flash models suggest a similar path may follow.
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- DeepSeek’s V4 Pro 0813 model is accessible via API on OpenRouter, with no official announcement from DeepSeek.
- Prior DeepSeek V4 Pro and V4 Flash models had open weights released, suggesting V4 Pro 0813 may follow.
- Benchmarks for the new model were reportedly shared in a DeepSeek WeChat group, later reposted on Reddit and Hacker News.
DeepSeek’s V4 Pro 0813 is now accessible via API on OpenRouter, according to a 12 August 2026 post by Simon Willison. The model is available only through the API endpoint; DeepSeek has not published an official announcement page for the release.
Willison notes that prior DeepSeek V4 Pro and V4 Flash models had open weights released, making it plausible that V4 Pro 0813 could follow the same path. He does not confirm whether an open-weight release is planned for this variant.
Benchmarks for V4 Pro 0813 were reportedly shared first in the Official DeepSeek WeChat Group, then reposted to Reddit where the thread was removed by moderators for being labeled 'low-effort,' and later summarized in an ASCII-art table on Hacker News.
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